# Spanprism: Trace Explorer — Inspect OTLP Traces Offline

> Inspect OTLP Traces Offline (iPhone/iPad app by Robert Corbin.)

- Source: https://appshunter.io/ios/app/spanprism-trace-explorer/id6792576832 (this page in markdown: same URL + `.md`)
- Developer: [Robert Corbin](https://appshunter.io/developer/1890247992)
- Category: Developer Tools, Utilities
- Price: $3.99
- Age rating: 4+
- Requires: iOS 17.0 · 42 MB
- Languages: American English
- Released: 2026-07-29
- Data updated: 2026-09-07
- User reviews in markdown: https://appshunter.io/ios/app/spanprism-trace-explorer/id6792576832/reviews.md

## What is Spanprism?

Spanprism is an on-device OpenTelemetry trace explorer for developers and SREs who cannot or do not want to send diagnostic traces to a hosted backend.

Turn local OTLP trace JSON evidence into a prioritized, editable review with explicit assumptions, ownership, and exportable decisions.

KEY FEATURES
- Native OTLP trace JSON import and normalization
- Interactive critical path prism
- Editable spans with owners and evidence
- Deterministic latency findings scoring
- Current-versus-proposed state comparison
- Decision log with accountable disposition
- Portable trace evidence packet export
- Private offline workspace with no account
- Native structured-file or CSV import
- Local PDF, workspace JSON, and domain-artifact export
- 48 original offline technical reference plates
- No account, ads, analytics, tracking, IAP, or subscription

Spanprism analyzes imported trace payloads and timestamps. It does not collect live telemetry, account for backend sampling transformations, or prove causality. Confirm clocks, instrumentation, sampling, and service behavior in the source systems.


## Version history (last 1 release)

### 1.0 — 2026-07-29

No release notes.

## More apps by Robert Corbin

- [Daily Word Journey](https://appshunter.io/ios/app/daily-word-journey/id6761548266)
- [Hush Secret Text](https://appshunter.io/ios/app/hush-secret-text/id6761658175)
- [Renew Guard](https://appshunter.io/ios/app/renew-guard/id6761755447)
- [Receipt to PDF](https://appshunter.io/ios/app/receipt-to-pdf/id6761782025)
- [Route Your Pay](https://appshunter.io/ios/app/route-your-pay/id6761783719)
- [Tip Arbiter](https://appshunter.io/ios/app/tip-arbiter/id6761786879)

All apps by Robert Corbin: https://appshunter.io/developer/1890247992

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*